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Wysocki" , Michael Ellerman , , , Subject: [PATCH] [v2] debufgs: debugfs_create_blob can set the file size Date: Wed, 7 Feb 2024 16:46:07 -0600 Message-ID: <20240207224607.3451276-1-ttabi@nvidia.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN3PEPF0000B069:EE_|CH3PR12MB7763:EE_ X-MS-Office365-Filtering-Correlation-Id: 616318e3-6b52-4448-59f7-08dc282e9bfc X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230031)(4636009)(376002)(346002)(396003)(136003)(39860400002)(230922051799003)(82310400011)(186009)(64100799003)(1800799012)(451199024)(40470700004)(46966006)(36840700001)(41300700001)(86362001)(316002)(478600001)(36756003)(2616005)(426003)(1076003)(26005)(2906002)(7636003)(356005)(82740400003)(83380400001)(5660300002)(110136005)(8676002)(336012)(70206006)(7696005)(8936002)(70586007);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Feb 2024 22:46:22.8193 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 616318e3-6b52-4448-59f7-08dc282e9bfc X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN3PEPF0000B069.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7763 debugfs_create_blob() is given the size of the blob, so use it to also set the size of the dentry. For example, efi=debug previously showed -r-------- 1 root root 0 Feb 7 13:30 boot_services_code0 -r-------- 1 root root 0 Feb 7 13:30 boot_services_code1 -r-------- 1 root root 0 Feb 7 13:30 boot_services_data0 -r-------- 1 root root 0 Feb 7 13:30 boot_services_data1 -r-------- 1 root root 0 Feb 7 13:30 boot_services_data2 -r-------- 1 root root 0 Feb 7 13:30 boot_services_data3 -r-------- 1 root root 0 Feb 7 13:30 boot_services_data4 but with this patch it shows -r-------- 1 root root 12783616 Feb 7 13:26 boot_services_code0 -r-------- 1 root root 262144 Feb 7 13:26 boot_services_code1 -r-------- 1 root root 41705472 Feb 7 13:26 boot_services_data0 -r-------- 1 root root 23187456 Feb 7 13:26 boot_services_data1 -r-------- 1 root root 110645248 Feb 7 13:26 boot_services_data2 -r-------- 1 root root 1048576 Feb 7 13:26 boot_services_data3 -r-------- 1 root root 4096 Feb 7 13:26 boot_services_data4 Signed-off-by: Timur Tabi --- fs/debugfs/file.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c index c6f4a9a98b85..848deff11b7e 100644 --- a/fs/debugfs/file.c +++ b/fs/debugfs/file.c @@ -1152,7 +1152,14 @@ struct dentry *debugfs_create_blob(const char *name, umode_t mode, struct dentry *parent, struct debugfs_blob_wrapper *blob) { - return debugfs_create_file_unsafe(name, mode & 0644, parent, blob, &fops_blob); + struct dentry *dentry; + + dentry = debugfs_create_file_unsafe(name, mode & 0644, parent, blob, &fops_blob); + if (!IS_ERR(dentry)) + i_size_write(d_inode(dentry), blob->size); + + return dentry; + } EXPORT_SYMBOL_GPL(debugfs_create_blob); -- 2.34.1